Hi there,
Both the original SBD book and the new Supercharged book are pretty easy reading. Dr. A. breaks down the science behind his diet in terms that are pretty simple to understand without too much "mumbo jumbo"
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If you're new to the diet, it's probably better to get the original SBD book, since it really goes into the basics of the diet. The Supercharged book focuses less on the why and more on the way to integrate exercise into the diet.
Both books include a list of foods for each phase and foods to avoid, as well as menus that are pretty easy to follow (if you want to follow them) and recipes that are pretty basic, so you don't have to do a lot of complicated cooking, which is a plus.
You can get the original SBD book pretty much anywhere you mention and there's a paperback version that is pretty well priced. The Supercharged book is also pretty widely available but more expensive, as I don't think that a paperback version is available yet.
It's a great plan overall, so good luck!
Tam